Process of extracting solids.



E. E. HOWSON. PROCESS OF EXTRACTING SOLIDS. APPLICATION FILED ocT. 5. 1917.

' 5 SHEETSSHEET I. i

WITNESSES uvmv r09 11m Aviva/w)? Q1, ml 8 T m Patented-Nov. 12, 1918.

E. E. HOWSON. PROCESS OF EXTRACTING souos.

APPLICATION FILED OCT- 5. l9l7- Patented N 0v. 12, 191&

5 SHEETS-SHEET 2. 4

WITNESSES ll TTOR/VEVS E. E. HOWSON. PROCESS OF EXTRACTING SOLIDS. APPLICATION mm OCT. 5. 1911.

Patented Nov. 12, l9l&.

5 SHEETSSHEET 3'.

WITNESSES A TTOIiWEVS E. E. HOWSON. PROCESS OF EXTRACTING SOLIDS. APPLICATION FILED OCT. 5. I917.

\k I it Llllz-ll I.

Patented Nov. 12, 1918;.

5 SHEETS-SHEET 4 i Arm/Mrs E. E. HOWSON. PROCESS OF EXTRACTING SOLIDS.

APPLICATION FILED OCT- 5| I917.

5 SHEETS-SHEET 5.

Patented Nov. 12, 1918i.

INVENTOR 2080)? ATTORNEYS PROCESS OF EXTRACTING SOLIDS.

. i i To all zclzom it may concern;

Be it known that I, ELLIS EDGAR Howsox,

a citizen of the United States, and a resident of Salt Lake City, in the county of Saltv Lake and State of Utah, have invented a new and Improved Process of Extracting Solids, of which the following is a full, clear,and exact description.

T his invention relates to an improved 'method of filtering, whereby solids are "extracted from a suspending liquid in a manner to provide mechanically a continuity ofoperation from the beginning to the end.

The object in view is to provide a filtering process with successive steps arranged in such a manner as-to permit of a continuous operation while/portions of a solid and suspending liquid w'illsbe passing through clifferent andsuccessive steps. Y

Another object in view is to provide the steps ofa process whereby a continuous inflow-of material may be had-and a continuous outflow of the filtered or extracted mattcr 1na v be had, while successive and progressive steps in the filtration may take place between the inflow and outflow.

In carrying out the objects of the invention different means may be utilized, but for the purpose of illustration a particular construction has been shown in the accompanying drawings, in which- Figure 1 is a longitudinal vertical section through Fig. 2 on line -11.

Fig.2 is a section through Fig. 1 on line 2-2. 1

F igi3 isa section through Fig. l on line .-Fig.' 4 is a fragmentary side elevation of part of the structure shown in Fig. 1, one of the filtering members being shown tilted.

Fig; 5 is a detail fragmentary sectional view showing part of one of the filtering members in a tilted position.

sectional view through-Fig. 2 on line 66.

Fig. 7 is a top plan view of a valve dis-,

through Fig. 8 011 line 1010.

Fi 11 is a view similar to Fig. 10 but showing a slightly-modified form of valve.

In order that the process may be clearly Fig. 6 is an enlarged detail fragmentary Specification of Letters Patent. .Patented Npv. 12,1918. Application filed October 5, 1917. Serial-7N0. 194.930. v 1

understood and the various successive steps understood, adescription will be given of the partlcular structure shown, but it is of course understood that'other constructions may be used without departing from the spirit of the invent-ion provided the same will"' permit of the continuous inflow and outflow and successlve steps for separatmg the material between the inflow and outflow.

Referring to the accompanying drawings I by numerals, 1 indicates a foundation or platform whichis fixed or stationary and is provided, as shown in Fig. 1, with upright walls 2 and 3, sa-idwalls extending in circles .as-shown in Fig. 3 so as to accommodate the circular conveyer 4. A discharge opening.

5 is provided at a convenient point in the platform 1 so that the matter discharged between the walls'2-and 3 may be moved by conveyer {to the discharge point and from thence disposed of as may be desired. ,The

conveyer 1 is made-up of a number of boards mounted thereon running on a track 10, whereby the parts are supported at the outer the various gear wheels 11- meshingwith the rack 12, which rack is rigidly secured to the bars 7. nected with a shaft 13, which shaft carriesa One of the gear wheels 11 is con Each of tha bars 7 at the outer end has a grooved wall 9 edge while the inner edge is supportedby 1 second gear wheel 14: over which a chain-15 passes, said chain also passing over a sprocket. wheel 16, rigidly secured to shaft 17. Shaft 17, as shownin Fig. 1, is designed-to convey power from any suitablesource to chain 15 and to the'beveled-gear 18 which meshes with ear 19 so as to rotate the standard20 to which it is rigidly secured, said standard being guided and held in bearings 21 and 22.

As described, the conveyer to remove the unnecessary and undesired filtering sections 23, which filtering sections are successlvely dumped, as shown 1nv Figs.

' 1 and 4. In the drawings a certain number of filtering sections 23 have been shown, but it is evident that a larger or less number maybe used without departing from the 4 is intendedproper place by solids which are discharged from the various spirit of the invention, said filtering sections solution being supplied through the pipes 24 and 25. The idea in this connection is to supply one or more kinds of solution to be filtered and to supply the same in a continuous stream, but to intermittently acton the filtering sections 23 so that during the rotation of the supply pipes 24 and 25 the various filtering sections 23 will be in diiferent stages of operation, each filtering section completing the entire cycle of operation on each rotation of the pipe 24. The matter filtered may be any solid in suspension from which-the suspending liquid is to be extracted and possibly some of the solid remaining to be submerged again and filtered before discharged from the filtering device.

As shown in Figs. 1 and 2, the supply pipes 24 and 25 are connected to the rotating tanks 26 and 27, respectively, said tanks being preferably rigidly secured to shaft 20 so as to rotate therewith. Pipes 28 and 29 sup ply different solutions to the tanks 26 and 27, said pipes being stationary and discon nected from the tanks so that the tanks may freely rotate and distribute the solution or the matter in suspension as the pipes rotate. The upper edge of the tank 26 is turned over at 30 and fits into a trough 31 so as to receive any matter spilled therefrom, said overflow being led to a suitable discharge point through pipe 32. As will be evident, when the device is started the solution from pipe 24 is discharged continuously as the same rotates, whereby the various filtering sections 23 are successively supplied with the solids in suspension and also with a solution from pipe '25 which may be any suitable solid in suspension or may be water or any other fluid. The reason that the pipes 24 and 25 are spaced at such a great distance apart is to allow the filter to act on the matter discharged from pipe 24 before the matter discharged from pipe 25'is supplied to the respective filtering sections.

Each of the filtering sections 23 is supplied with a solid bottom 33 (Fig. 6) having suitable side walls 34 at the sides and ends, to which may be secured a filtering substance 35 consisting of a wire or coarse mesh member 36 and a fine mesh or cloth member 37. Suitable supporting sleeves 38 are provided and held in place by bolts 39 so as to supportthe filtering medium 35 properly when the matter to be filtered has been discharged thereon. -On each of the filtering sections 23 is arranged an overhanging member 40 which prevents any spilling of the material between the filters, as the matter discharged on any of the members 40 will gravitate into the next adjacent filter and be properly acted on thereby. Asshown in Figs. 1 and 6, aplurality of cleats 41 are secured to the bottom .33 of the various filtering sections 23 so as to clamp the bars 42 in position, said bars being rigidly secured to shaft 43, which shaft is supported in suitable journal members 44 and 45 on upright members 46 and 47. A spring 48 bears against the outer bar 42 and against the bearing 45 so as to continually urge the filter 23 radially inwardly. This action is to cause the jarring of the entire filter 23 under certain circumstances, as hereinafter described, so as to shake out any of the solids remaining on the nltering section 23 when the filter has been turned, as shown in Figs. 1 and .4. As shown in Figs. 1 and 2, acap 49 is mounted on the end of each of the shafts 43 for reducing the fric tion between said shafts and the jarring cams 50 and 51 mounted on the tubular memher or wall 52. It will be observed that the tubular member or wall 52 is rigidly secured to the shaft 20 and also is rigidly secured to a ring 53 carrying the rack 54, which rack is mounted on suitable pinions 55 whereby said rack is properly supported. As shown in Fig. 2. there is provided one large jarring member 50 and a number of small jarring members 51. together with a double face cam 56.

'hen the member 52 and associated parts are moving in the direction of the arrow 57. as shown in Fig. 2, a small jarring cam 51 will engage the various caps 49 and will give the filtering: sections 23 a short outward movement, and by reason of the spring 48 the filters will be given a quick inward movement until the caps strike the member 52. thus producing a slight jar in order that the matter being filtered may be jarred or, shaken so as to allow a better filtering action. \Vhen a filtering section 23 reaches the large cam 50 it is moved outwardly by the cam and then quicklyinwardly by the spring 48 so as to be given a considerable jar. This jar occurs whenthe filter has been tilted to the position shown in Figs. 1 and 4, whereby the old solid matter left on the filter will be jarred off and caused to fall on to the conveyer 4.

In order that the various filters 23 may be turned or tilted as shown in Figs. 1 and 5 at the proper time, a tilting pin 58 enters the notch 59 of lever 60, as shown in Figs. 4 and 5, thus causing said lever to be rotated as the pin is moved along. The rotation for a distance of approximately 45 will turn the filter 23 a corresponding distance by reason of the fact that the lever 63 is rigidly secured 'to shaft 43 and, consequently, the shaft and filter turn with the lever. This turning operation is approximately completed at the time the cap 49 slips off the large cam 50. The particular filter 23 which has been tilted remains in a tilted ment continuing until the projecting ends of the bars 42 come in alinement with the notches6l in the supporting bars 62 and then the upper notch 63 of lever 60 will engage the re-tilting pin 64:, and as this pin moves with member 62 the filter will be again moved to its horizontal position.-

After the pin has moved to its horizontal position the-cap l9 gradually slides off the end of cam 56 and, consequently, the filter is returned to its original position without a jar and the extending ends of the bars l2 are moved out of registry with the notches 61,

whereupon the supporting bar 62 acts as a supportfor that side of the filter while the overhanging member 40 overlaps the next adjacent filter. In. this way each of the filters 23 is shaken a number of times by the small cams 51 and given one large jar by the cam 50 as the tubular member or drum 52 rotates. In addition, each of the filters 23 and 3 whereby the conveyer 4 may move theis tilted by the pins 58 and 64:, respectively, so as to dispose of or discharge the solid matter into the space between the walls 2 same to the discharge point 5.

After the pipes 24 and 25, respectively, have dlscharged certain matter into the respective filters, the liquid and part of the.

solids are extracted therefrom by suction, said suction beginning lmmedlately after the discharge of the matter into the filters or during the discharge thereof, and automatlcally coming lnto operation and movi filter.

ing out of operation by reason of a plurality of arms properly positioned on the ring 53 or the rack 5i and moved thereby so as to operate the various valves 66 in proper timed relationship to the operation of the pipes 24 and :25 and the tilting of the filters 23. It will be noted that there is one valve 66 for each of the filters 23 and that these valves are allconnected to pipes 67, 68, 69

and 70.

Immediately after the pipe 21 has supplied solution to the filter 23 the valve connected therewith is turned by one of the arms 65 so that the vacuum pipe 70 will be turned on and the liquid part of the solution will be sucked through pipe 70 to a discharge point, said liquid carrying with itsome of the solids or only liquid matter, according to the fineness of the filtering medium on the After this has been carried on for a predetermined length of time the next arm 65 will strike the' valve and move the same a predetermined distance. whereupon the passageway to the second vacuum pipe 69 is opened. Simultaneously with connecting pipe 69 with the filter or previous thereto, a quantity of submerging fluid is discharged .by pipe 25 so that this submergingfiuid is removed through the vacuum pipe 69 and with it certain of the solids, as the case may be. Pipe 69 is connected with the filter for a less time than the pipe 70. At a predetermined time the pipe 69 is cut off by another arm 65 operating the valve 66, whereupon not only will pipe 69 be cut oif but a pipe 68 connected to the filter for supplying a stirring and mixing medium, for instance, air or water, will be turned on or connected for supplying air or water a short time to the filter. After the air or water has been supplied for a predetermined time, a fourth arm engages the valve 66 and operates the same for turning off pipe 68 and turning on pipe 67, said last mentioned pipe being l g pipe so as to drain off the water or to allow the air to circulate in case air is being used. This last operation occurs approximately at the time the filter is tilted and may occur just before or after or during the tilting operation. In order that the pipes 67 to 70 may communicate through the various valves '66 to the various filters 23, a pipe 71 is connected to the bottom of each filter, as shown in Fig. 6, and to the respective valves 66, there being one pipe 70 and one valve 66 for each filter, these members remaining stationary except for the tilting operation of thefilters and the movementof the valve, plug and associated parts in the valves. It is of course understood that a fifth arm 65 is provided for turning ofi' the pipe 67 so that. the valve 66 will be closed.

The detail construction of the valve 66 may be varied in a number of particulars provided the same accomplishes the results above mentioned. A preferable construction of valve is shown in Figs. 7 to 10,inclus1ve, in which there is provided a central master CID plug 72 connected with the pipe 71, said plug having a central passageway Tb merging into a radiating passageway Ti adapted to register at different times with the passageways T5. T6. T7 and 78. Associated with the master plug 72 are auxiliary plugs 79, 80, 81 and 8-2. formed with vertical passageways, as shown in Fig. 8, merging into radial pasageways adapted to register at different times with the passageways 75 to 78, inclusive. The plugs 7 9 to 82, incluslve, are connected to the respective pipes 67 to 70, inclusive, so that any of the pipes 67, 68, 69 or 70 may be caused to communicate with pipe 71. The master plug 72 is provided with a centrally arranged gear 83 (Fig. 8) whlch meshes with the gears 84:, 85, 86 and 87 connected with the auxiliary plugs, whereby when the master plug is turned a predetermlned distance the auxiliary plugs will be turned the same distance, whereby the proper passage ways may be brought into registry. The fifth arm 65 above mentioned is intended to move the arms 88 of the operating plate 89 a proper distance for shifting the last plug and associated plugs for preventing a communication. of any of the auxiliary plugs withthe master plug. 1

In Fig. 11 will be seen a view similar to Fig. 10., showing a slightly modified form of the invention in which there are provided five auxiliary plugs 90 instead of four auxiliary plugs, as shown in Fig. 10. This arrangement is provided where it is desirable to have another pipe or tube for drawing off certain of the liquid matter.

In operation, the power shaft 17 is started and as soon as the same, together with the parts connected thereto, has attained the speed desired the matter in suspension is discharged into the tanks 26 and 27 and is allowed to fiow therefrom through pipes 2i and 25 so as to supply the various filters 23 with proper quantities of the matter in suspension. Preferably the pipe 35 is turned otf until it has reached the particular filter first supplied with the matter in suspension from pipe 24:, whereupon it is turned on and left turned on aslong as the device is in operation. The pipes 2i and 25 are continually rotated at 'a; predetermined speed without any stops in order "to successively supply the matter to be filtered to the various filters 23. The filters 23 are successively tilted and retilted after having gone through the previous steps in the process. of-filtration.

It will be noted from Fig. 2that in case an excessive quantity of material is supplied to any particular filter said excessive material may flow out the overflow chute 91 into an annular trough 92 which has a suitable discharge (not shown) for leading the overflow to a convenient discharge point. In this way an ample quantity is assured for the re-- spective filters while none of the material is wasted, as it may be againforced through pipes 28 and 29 to tanks 26 and 27. This is especially true as the overlapping members 40 (prevent any spilling between the filters, an any slight spilling on the inner end of the filters is directed by the deflector 93 into the conveyer l and is moved from thence to the discharge point 5. 'AS the material is constantly supplied and moved at a uniform rate the resultingfiltration or extraction is constant and of a given quantity per unit of time, so that an easy estimate may be made'of the output of any particular device and, consequently, the cost of filtering any given quantity-of material. .It is to be noted thatthe abovedescribed construction may be used in extracting or separating solids in a ii The method herein described of ex-. tracting. solids held. in suspens1on 1n a liquid, consisting in subjecting a series of. fil-' ters to an intermittent jarring action, delivering thematerial successively to the, filters, drawing OK the liquid, delivering a sub merging liquid successively ,to the filters from which the liquid has been removed, drawing ofi the liquid, admitting a, stirring and mixing fluid to the material, and allowing the fluid to escape. v

The method herein described of ex tracting solids held in suspension in a liquid, consisting in subjecting a series of filters to an-intermittent jarrlng actlon, delivering the material successively to the filters,

sucking 0E the liquid, delivering a submerging liquid successively to the filters from which the liquid has been removed, sucking off the' liquids, admitting a stirring and mixing fluid to the material, and draining Y off the liquid. a

3. The method herein described of extracting solids held in suspension in a liquid, consisting in subjecting a series of fibters to an intermittent jarring action to facilitate the filtering action, delivering the material successivel to the filters, suckmg OK the liquid, delivering a ubniergirig'liq' uid successively to the filters from which the liquid has been drawn ofl; sucking off the liquid, admitting a stirrlng and mixing fluid into'the material through the bottom of the filter, draining off the liquid, suecessively tilting the filters, and subjecting the tilted filters to a jarr ng action to jar ofi the material adhering to the filter.

. ELLIS EDGAR HPWSON. 

